public MainWindow(string fileName)
{
InitializeComponent();
// fileName ="E:\\Repos\\piview\\vs-project\\testimg\\test-ppm1.ppm"; // test
if (!File.Exists(fileName))
{
return;
}
FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
fileStream.Seek(0, SeekOrigin.Begin);
ImageSource imgSource = ImageFileUtils.LoadPPM(out m_imgWidth, out m_imgHeight, fileStream);
if (null == imgSource)
{
MessageBox.Show("Cannot decode this format's image file.", "Error!");
}
fileStream.Close();
imgShow.Source = imgSource;
string imgRepoPath = fileName.Substring(0, fileName.LastIndexOf('\\'));
imgRepoPath += '\\';
m_imgList = ScanImageFiles(imgRepoPath);
m_imgSeq = m_imgList.IndexOf(fileName);
m_showable = true;
Title = "piview - " + fileName;
}
protected override void OnKeyDown(KeyEventArgs e)
{
base.OnKeyDown(e);
switch (e.Key)
{
case Key.Right:
if (m_imgList.Count == 0 || m_imgList.Count == 1)
{
return;
}
if (m_imgSeq == m_imgList.Count - 1)
{
m_imgSeq = 0;
}
else
{
++m_imgSeq;
}
using (FileStream fileStream = new FileStream(m_imgList[m_imgSeq], FileMode.Open, FileAccess.Read))
{
fileStream.Seek(0, SeekOrigin.Begin);
ImageSource imgSource = ImageFileUtils.LoadPPM(out m_imgWidth, out m_imgHeight, fileStream);
if (null == imgSource)
{
MessageBox.Show("Cannot decode this format's image file.", "Error!");
}
fileStream.Close();
imgShow.Source = imgSource;
Title = "piview - " + m_imgList[m_imgSeq];
}
break;
case Key.Left:
if (m_imgList.Count == 0 || m_imgList.Count == 1)
{
return;
}
if (m_imgSeq == 0)
{
m_imgSeq = m_imgList.Count - 1;
}
else
{
--m_imgSeq;
}
using (FileStream fileStream = new FileStream(m_imgList[m_imgSeq], FileMode.Open, FileAccess.Read))
{
fileStream.Seek(0, SeekOrigin.Begin);
ImageSource imgSource = ImageFileUtils.LoadPPM(out m_imgWidth, out m_imgHeight, fileStream);
if (null == imgSource)
{
MessageBox.Show("Cannot decode this format's image file.", "Error!");
}
fileStream.Close();
imgShow.Source = imgSource;
Title = "piview - " + m_imgList[m_imgSeq];
}
break;
default:
break;
}
}